similar to: [Bug 1014] SCP slow bandwidth with Solaris8 on n240

http://bugzilla.mindrot.org/show_bug.cgi?id=1014 dtucker at zip.com.au changed: What |Removed |Added ---------------------------------------------------------------------------- Attachment #884 is|0 |1 obsolete| | ------- Comment #4 from dtucker at zip.com.au 2005-10-26 18:20 ------- Created

http://bugzilla.mindrot.org/show_bug.cgi?id=1014 Summary: SCP slow bandwidth with Solaris8 on n240 Product: Portable OpenSSH Version: 3.7.1p2 Platform: ix86 OS/Version: SunOS Status: NEW Severity: normal Priority: P2 Component: scp AssignedTo: openssh-bugs at mindrot.org ReportedBy:

Hello list, right now SSH Tunnel / scp is reaches just around 76Mb/s on my E5 Xeon using AES-NI but openssl reaches around 600-700Mb/s using 128aes-cbc cipher. As far as i understand http://www.psc.edu/index.php/hpn-ssh this is due to very small buffers in ssh / scp. Is there any work on this? Like autotuning the buffer size? Are there plans to integrate the hpn patches? Greets, Stefan

Hi, I tried different encryptions like arc four, but always with the same result. BTW: googling shows some similar questions and they are stuck on set same speed +-. But non of that solutions helped me. /G?tz > Am 11.08.2015 um 12:14 schrieb Eero Volotinen <eero.volotinen at iki.fi>: > > Usually problem in encryption. > > try cipher arcfour or apply hpn patches to

Hi, http://www.psc.edu/networking/projects/hpn-ssh/ Clearly, the HPN patches significantly boost throughput performance. This enhancement is entirely from tuning the SSH buffer sizes. Alex Tavcar

Dear CentOS lovers, Could you consider to include a patch, http://www.psc.edu/networking/projects/hpn-ssh/ for openssh maybe as CentosPlus packages? It has great speed impact for long-distance ( high delay ) transfer. Regards, Yuji Tsuchimoto

http://www.psc.edu/networking/projects/hpn-ssh/ Mike Stevens and I just released a new set of high performance networking patches for OpenSSH 3.9p1, 4.0p1, and 4.1p1. These patches will provide the same set of functionality across all 3 revisions. New functionality includes 1) HPN performance even without both sides of the connection being HPN enabled. As long as the bulk data flow is in the

Usually problem in encryption. try cipher arcfour or apply hpn patches to ssh. ( http://www.psc.edu/index.php/hpn-ssh) -- Eero 2015-08-11 12:37 GMT+03:00 G?tz Reinicke - IT Koordinator < goetz.reinicke at filmakademie.de>: > Hi, > > i have two servers, connected to to the lan by 10Gb with 10Gb and DAS > hardware raid. > > Each system con read and write locally or to the

https://www.psc.edu/networking/projects/hpn-ssh/hpn-v-ssh-tput.jpg "SCP and the underlying SSH2 protocol implementation in OpenSSH is network performance limited by statically defined internal flow control buffers. These buffers often end up acting as a bottleneck for network throughput of SCP, especially on long and high bandwith network links. Modifying the ssh code to allow the buffers

The HPN12 patch available from http://www.psc.edu/networking/projects/hpn-ssh addresses performance issues with bulk data transfer over high bandwidth delay paths. By adjusting internal flow control buffers to better fit the outstanding data capacity of the path significant improvements in bulk data throughput performance are achieved. In other words, transfers over the internet are a lot

The HPN patch set has been updated to work with OpenSSH4.6. This patch can help improve performance of bulk data transfers when using SSH, SCP, or SFTP. Please see http://www.psc.edu/networking/projects/hpn-ssh for more information. The patch is available from the above address or directly with http://www.psc.edu/networking/projects/hpn-ssh/openssh-4.6p1-hpn12v16.diff.gz If you have any

Howdy, As a note, we now have HPN patch for OpenSSH 4.2 at http://www.psc.edu/networking/projects/hpn-ssh/ Its still part of the last set of patches (HPN11) so there aren't any additional changes in the code. It patches, configures, compiles, and passes make tests without a problem. I've not done extensive testing for this version of openssh but I don't foresee any problems. I

[NB: General information regarding HPN-SSH can be found at http://www.psc.edu/networking/projects/hpn-ssh ] This is a beta release of HPN12 but I'd like to get some user experiences with it if anyone is so inclined. This version of the HPN patch more closely conforms to the openssh nomenclature and coding style, it eliminates the use of command line switches in favor of -o options, it

We've released a new HPN (High Performance Network) patch for OpenSSH 3.9p1. We've made two major changes - first off we backed out of all the modifications we made to buffer.c. Turns out that it just wasn't necessary once we fixed a nagging bug in channels.c. I also made a minor change to the buffer sizes in the source and sink functions in scp.c Increasing the size of both

On the request of a coworker looking for more information about our SSH users I developed a patch that provides extended logging capability for SSHD. Its been written with an eye towards machine parsing. This patch will write the following information to the standard system log: remote ip, remote port, & remote user name protocol number and client version information Encryption method, MAC

Hello Are there plans to merge the hpn-ssh (http://www.psc.edu/networking/projects/hpn-ssh/) and the LPK (http://code.google.com/p/openssh-lpk/) into the mainline openssh. Adding lpk has been logged as a bug in bugzilla as They are two patches that I always apply as the performance boost from hpn-ssh is substantial to say the least, and centralisation of the authorized_keys into a LDAP server

http://bugzilla.mindrot.org/show_bug.cgi?id=1311 Summary: Performance on high BDP networks Product: Portable OpenSSH Version: 4.6p1 Platform: All OS/Version: All Status: NEW Severity: normal Priority: P2 Component: Build system AssignedTo: bitbucket at mindrot.org ReportedBy: imorgan at

On multiple core systems OpenSSH is limited to using a single core for all operations. On these systems this can result in a transfer being processor bound even though additional CPU resources exist. In order to open up this bottleneck we've developed a multi-threaded version of the AES-CTR cipher. Unlike CBC mode, since there is no dependency between cipher blocks in CTR mode we

This is a preliminary release and as such should be used at your own risk. In my testing the application builds under OS X and Linux, passes the regression tests, and file transfer tests on our test connections exhibited a 1600% increase in performance (1.4MB/s versus 20.9MB/s 46ms RTT). This patch (hpn12v10) is available from

Ben Bennett and I (both researchers at the Pittsburgh Supercomputing Center) have released the HPN13v1 patch set for OpenSSH 4.7p1. Primarily this release incorporates the previously announced multi-threaded AES-CTR mode cipher which will allow users to make better use of multi-core environments. In our test environments we've seen upwards of a 100% improvement in throughput performance